hcq/oceanbase
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

[FEAT MERGE] [CP] Improve the rowcount estimation

Browse Source 
Co-authored-by: akaError <lzg020616@163.com>
This commit is contained in:
xianyu-w
2024-01-22 04:12:26 +00:00
committed by ob-robot
parent a125d6cf00
commit d2ab1a4aae
70 changed files with 5953 additions and 3722 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
src/sql/optimizer/ob_optimizer.cpp
View File

@ -550,6 +550,7 @@ int ObOptimizer::extract_opt_ctx_basic_flags(const ObDMLStmt &stmt, ObSQLSession
bool has_subquery_in_function_table = false;
bool has_dblink = false;
bool force_serial_set_order = false;
bool storage_estimation_enabled = false;
bool has_cursor_expr = false;
int64_t link_stmt_count = 0;
omt::ObTenantConfigGuard tenant_config(TENANT_CONF(session.get_effective_tenant_id()));
@ -575,7 +576,10 @@ int ObOptimizer::extract_opt_ctx_basic_flags(const ObDMLStmt &stmt, ObSQLSession
LOG_WARN("fail to check rowsets enabled", K(ret));
} else if (OB_FAIL(stmt.check_has_cursor_expression(has_cursor_expr))) {
LOG_WARN("fail to check cursor expression info", K(ret));
} else if (OB_FAIL(session.is_storage_estimation_enabled(storage_estimation_enabled))) {
LOG_WARN("fail to get storage_estimation_enabled", K(ret));
} else {
ctx_.set_storage_estimation_enabled(storage_estimation_enabled);
ctx_.set_serial_set_order(force_serial_set_order);
ctx_.set_has_multiple_link_stmt(link_stmt_count > 1);
ctx_.set_has_var_assign(has_var_assign);